I thought I'd start a thread for the budding designers on here to share their thoughts on the updated southern bus routes once the new Flinders Interchange is completed. My suspicion is that very little, if anything, will change. But my hope is the southern routes all become feeders into a high-frequency Flinders train line. I think you can easily create a few extra Go Zones to give a much needed boost to outer suburbs services, from the time savings removing express routes travelling down South and Goodwood Rds. I'm not sure of the viability of regular route on the Southern Expressway, but that does avoid the double transfer and this is a vision's thread, right?!

Main South Rd/Old South Rd Go Zone
712 – Flinders University to Noarlunga Ctr via University Dr, Flinders Interchange, Main South Rd, Old South Rd, Old Reynella, Panalatinga Rd, then old 722 to Penneys Hill Rd, then Main Sth Rd, Glynville, Majorca, Beach Rd, Elizabeth Rd and Colonnades.
702 – Night and weekend service. 712 via Bluehills and Tripoli Rds not Main South Rd.
T722 – Reduced schedule. Now via Old Sth Rd between Old Reynella and Panalatinga PnR
715 – Flinders University to Noarlunga Ctr via University Dr, Flinders Interchange, Main South Rd, Old South Rd, Old Reynella then old 725. Nights and weekend terminate at Old Reynella.
Main South Rd Go Zone maintained at night with 731/736

The Flinders Extension of the Tonsley Line is not a certainty — the SCAP deferred making a decision as they tound the information DPTI had supplied was inadequate. I'm still hoping they straighten the line and locate the station above Flinders Drive instead, as that would enable it to be extended further south. A rail extension to the Old Reynella bus interchange would enable far greater bus network improvements than just to Flinders, and also provides the opportunity for s further rail extension to Hackham.

Anyway, regarding your ideas:
What DPTI are planning is not an adequate substitute for bus services to the City.
It would be better if you explained your reasoning for each route.
Rather than trying to make Go Zones out of long sections of concurrent routes (which can lead to erratic service) it's better to try to avoid those, and upgrade individual routes to Go Zone frequency.

The 734 was diverted through Sheidow Park to replace the 680. Making the 682 even more indirect is not an adequate substitute.

Just build it wrote:Bye Union Hall. I'll see you in another life, when we are both cats.